RFR (S): 8150247: CompilerControl: LogCompilation testing

[Pavel Punegov]

Hi,

please review the following change to CompilerControl tests. It adds a new test to cover the gap found by JDK-8145345 [*].
 
The LogCompilation was empty after CompilerControl was integrated, but tests haven’t found that. This happened only when the LogCompilation was specified while there were no directives/CompileCommands enabled. With enabled directive/command it worked fine.

Tests didn’t found the issue due to:
1. There were no standalone test for LogCompilation. All related tests enable appropriate log directive or command.
2. LogProcessor incorrectly worked for empty tasks that should be logged. It didn’t reported the issue.

[*] https://bugs.openjdk.java.net/browse/JDK-8145345 <https://bugs.openjdk.java.net/browse/JDK-8145345>

bug: https://bugs.openjdk.java.net/browse/JDK-8150247 <https://bugs.openjdk.java.net/browse/JDK-8150247>
webrev: http://cr.openjdk.java.net/~ppunegov/8150247/webrev.00/ <http://cr.openjdk.java.net/~ppunegov/8150247/webrev.00/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/attachments/20160505/7950547c/attachment.html>